Apparatus for drying sludge

Details Apparatus for drying sludge Apparatus for drying sludge

1979-08-29

1981-04-21

Yudkoff, Norman

Concentrating evaporators

Gaseous blast or current

210220, 159 25R, 159 33, B01D 114

Patent

active

042630908

ABSTRACT:
Pasty, aqueous sludges of industrial or sewage treatment origin are dried for further use as raw material. The sludge particles are loosened by intense motion and substantially dry gases are introduced under pressure into the loosened sludge. The moisture enriched gases are removed from the sludge. The loosening and drying may be facilitated by repeatedly and sequentially increasing and decreasing the total surface area of the sludge. The intense motion is imparted to the sludge by at least one sludge stirring member and the drying gases may be introduced through the stirring member. The surface area of the sludge may be increased by plough-shaped or scraper-shaped tools. The surface area of the sludge may be decreased by rollers.

REFERENCES:
patent: 803051 (1905-10-01), Edson et al.
patent: 1058869 (1913-04-01), Kier
patent: 2284272 (1942-05-01), Franklin et al.
patent: 3842052 (1974-10-01), Gordini et al.

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